+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   45145 (1999 XN105) Classification: Main-belt Asteroid          SPK-ID: 2045145 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO233749 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1660607 n/a   a 2.4077267 n/a AU q 2.0078979 n/a AU i 6.22091 n/a deg node 40.64906 n/a deg peri 359.97631 n/a deg M 233.44194 n/a deg tp 2456880.2295976 (2014-Aug-10.72959760) n/a JED period 1364.6120613 3.74 n/a n/a d yr n 0.26381124 n/a deg/d Q 2.8075555 n/a AU   Orbit Determination Parameters    # obs. used (total)      842      first obs. used      1954-??-??      last obs. used      2012-06-15      # oppositions      11      planetary ephem.      DE403      condition code      0      fit RMS      0.53      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.495  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.3 mag n/a MPO233749   45145 (1999 XN105)          Discovered 1999-Dec-08 by Shiozawa, H., Urata, T. at Nachi-Katsuura (905) Reference: 20020822/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 XN105 = 1954 UR2 = 2001 FY48  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 04:01 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin